This bracket is compatible with select Viewsonic monitors to a desk mount, articulating arm, or any other VESA mounting system. Fits only the following Viewsonic Monitors: VX2770SMH-LED, VX2370SMH-LED, VX2270SMH-LED. Does not fir other brands or models. Check to make sure your monitor is listed before ordering! Fits Standard VESA Hole Patterns: 75 mm x 75 mm, 100 mm x 100 mm. The only tool required for installation is a screwdriver that fits the screws that came with your VESA mount. A VESA mount can be used to save desk space or provide additional viewing flexibility by mounting the monitor on a stand, movable arm, multiple-monitor mount, or a wall mount.